Add build vs watch scripts, tell drone to build_all_features.

Add script for building all configs with all lint as errors.

.drone.yml

@@ -13,7 +13,7 @@ steps:
   commands:
   - sccache -s
   - apt-get update && apt-get install -y libgoogle-perftools-dev
-  - (cd rtiow && cargo build --verbose --all)
+  - (cd rtiow && ./build_all_features.sh)
   - (cd rtiow && cargo test --verbose --all)
   - sccache -s
 

rtiow/build_all_features.sh

@@ -0,0 +1,6 @@
+set -e
+export RUSTFLAGS="-D warnings"
+cargo build
+cargo build --features=prom
+cargo build --features=profile
+cargo build --features=prom,profile

rtiow/src/bin/noise_explorer.rs

@@ -153,7 +153,7 @@ fn render_noise(noise_params: NoiseParams) -> image::GrayImage {
     const SEED: [u8; 16] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
     let rng: &mut XorShiftRng = &mut SeedableRng::from_seed(SEED);
     let mut img = image::GrayImage::new(noise_params.width, noise_params.height);
-    let tex: NoiseTexture<Box<noise::NoiseSource>> = match noise_params.noise_source {
+    let tex: NoiseTexture<Box<dyn noise::NoiseSource>> = match noise_params.noise_source {
         NoiseSource::Perlin => {
             NoiseTexture::new(Box::new(Perlin::new(rng)), noise_params.noise_type)
         }

rtiow/src/bin/tracer.rs

@@ -8,13 +8,13 @@ extern crate rtiow;
 extern crate stderrlog;
 extern crate structopt;
 #[macro_use]
+#[cfg(feature = "prom")]
 extern crate lazy_static;
 #[macro_use]
 #[cfg(feature = "prom")]
 extern crate prometheus;
 
 use std::fs;
-use std::time::Instant;
 
 use chrono::DateTime;
 use chrono::Utc;
@@ -46,7 +46,7 @@ fn push_metrics(_push_gateway_addr: &str, _instance: String, start_time: &DateTi
 
 #[cfg(feature = "prom")]
 fn push_metrics(push_gateway_addr: &str, instance: String, start_time: &DateTime<Utc>) {
-    let runtime = start_instant.elapsed();
+    let runtime = (Utc::now() - *start_time).to_std().unwrap();
     info!(
         "Render time {}.{} seconds",
         runtime.as_secs(),
@@ -88,8 +88,10 @@ fn push_metrics(push_gateway_addr: &str, instance: String, start_time: &DateTime
     }
 }
 
+#[cfg(not(feature = "profile"))]
 struct MockTimer;
 
+#[cfg(not(feature = "profile"))]
 impl MockTimer {
     fn start<T: Into<Vec<u8>>>(&self, _: T) -> Result<(), ()> {
         Ok(())
@@ -99,8 +101,10 @@ impl MockTimer {
     }
 }
 
+#[cfg(not(feature = "profile"))]
 struct MockProfiler;
 
+#[cfg(not(feature = "profile"))]
 impl MockProfiler {
     fn lock(&self) -> Option<MockTimer> {
         Some(MockTimer {})
@@ -117,7 +121,6 @@ fn main() -> Result<(), std::io::Error> {
         .init()
         .unwrap();
     let start_time: DateTime<Utc> = Utc::now();
-    let start_instant = Instant::now();
     let opt = Opt::from_args();
     let scene = opt.model.scene(&opt);
     fs::create_dir_all(&opt.output)?;

rtiow/src/human.rs

@@ -1,3 +1,4 @@
+#![allow(dead_code)]
 #![doc(html_root_url = "https://docs.rs/human_format")]
 
 //! From https://raw.githubusercontent.com/BobGneu/human-format-rs/master/src/lib.rs
@@ -72,7 +73,7 @@ impl Formatter {
         Formatter {
             decimals: 2,
             separator: " ".to_owned(),
-            scales: Scales::SI(),
+            scales: Scales::si(),
             forced_units: "".to_owned(),
             forced_suffix: "".to_owned(),
         }
@@ -151,11 +152,11 @@ impl Formatter {
 impl Scales {
     /// Instantiates a new `Scales` with SI keys
     pub fn new() -> Self {
-        Scales::SI()
+        Scales::si()
     }
 
     /// Instantiates a new `Scales` with SI keys
-    pub fn SI() -> Self {
+    pub fn si() -> Self {
         Scales {
             base: 1000,
             suffixes: vec![
@@ -173,7 +174,7 @@ impl Scales {
     }
 
     /// Instantiates a new `Scales` with Binary keys
-    pub fn Binary() -> Self {
+    pub fn binary() -> Self {
         Scales {
             base: 1000,
             suffixes: vec![
@@ -211,8 +212,6 @@ impl Scales {
     }
 
     fn get_magnitude_multipler(&self, value: &str) -> f64 {
-        let ndx = 0;
-
         for ndx in 0..self.suffixes.len() {
             if value == self.suffixes[ndx] {
                 return self.base.pow(ndx as u32) as f64;

rtiow/src/lib.rs

@@ -31,7 +31,5 @@ extern crate structopt;
 #[macro_use]
 extern crate serde_derive;
 #[macro_use]
-extern crate lazy_static;
-#[macro_use]
 #[cfg(feature = "prom")]
 extern crate prometheus;

rtiow/src/renderer.rs

@@ -15,6 +15,8 @@ use std::time;
 
 use image;
 use image::RgbImage;
+#[cfg(feature = "prom")]
+use lazy_static::lazy_static;
 use num_cpus;
 use rand;
 use rand::Rng;
@@ -36,7 +38,9 @@ lazy_static! {
         register_counter_vec!("rays", "Number of rays fired", &["level"]).unwrap();
 }
 
+#[cfg(not(feature = "prom"))]
 struct MockPrometheus;
+#[cfg(not(feature = "prom"))]
 impl MockPrometheus {
     fn with_label_values(&self, _: &[&str]) -> &MockPrometheus {
         self
@@ -146,9 +150,12 @@ pub struct Opt {
     /// Sub-samples per pixel
     #[structopt(short = "s", long = "subsample", default_value = "8")]
     pub subsamples: usize,
+    /// Use adaptive subsampling
+    #[structopt(long = "adaptive")]
+    pub adaptive_subsampling: bool,
     /// Select scene to render, one of: "bench", "book", "tutorial", "bvh", "test", "cornell_box",
     /// "cornell_smoke", "perlin_debug", "final"
-    #[structopt(long = "model", default_value = "perlin_debug")]
+    #[structopt(long = "model", default_value = "book")]
     pub model: Model,
     /// Path to store pprof profile data, i.e. /tmp/cpuprofile.pprof
     #[structopt(long = "pprof", parse(from_os_str))]
@@ -180,6 +187,8 @@ pub struct Scene {
     pub world: Box<dyn Hit>,
     pub camera: Camera,
     pub subsamples: usize,
+    /// overrides subsamples setting.
+    pub adaptive_subsampling: bool,
     pub num_threads: Option<usize>,
     pub width: usize,
     pub height: usize,
@@ -214,6 +223,7 @@ impl Default for Scene {
             )),
             camera,
             subsamples: 0,
+            adaptive_subsampling: false,
             num_threads: None,
             width: 0,
             height: 0,
@@ -288,26 +298,22 @@ enum Request {
 }
 
 enum Response {
-    Pixel {
+    Pixel { x: usize, y: usize, pixel: Vec3 },
-        x: usize,
+    Line { y: usize, pixels: Vec<Vec3> },
-        y: usize,
-        pixel: Vec3,
-    },
-    Line {
-        width: usize,
-        y: usize,
-        pixels: Vec<Vec3>,
-    },
 }
 
 static PIXEL_COUNT: AtomicUsize = AtomicUsize::new(0);
 
 fn render_pixel(scene: &Scene, x: usize, y: usize) -> Vec3 {
     let mut pixel: Vec3 = Default::default();
-    for _ in 0..scene.subsamples {
+    let pixel = if scene.adaptive_subsampling {
-        pixel = pixel + trace_pixel(x, y, scene);
+        Default::default()
-    }
+    } else {
-    pixel = pixel / scene.subsamples as f32;
+        for _ in 0..scene.subsamples {
+            pixel = pixel + trace_pixel(x, y, scene);
+        }
+        pixel / scene.subsamples as f32
+    };
     // Gamma correct, use gamma 2 correction, which is 1/gamma where gamma=2 which is 1/2 or
     // sqrt.
     PIXEL_COUNT.fetch_add(1, Ordering::SeqCst);
@@ -331,12 +337,16 @@ fn render_worker(
                 Request::Line { width, y } => {
                     trace!("tid {} width {} y {}", tid, width, y);
                     let pixels = (0..width).map(|x| render_pixel(scene, x, y)).collect();
-                    output_chan.send(Response::Line { width, y, pixels });
+                    output_chan
+                        .send(Response::Line { y, pixels })
+                        .expect("failed to send pixel response");
                 }
                 Request::Pixel { x, y } => {
                     trace!("tid {} x {} y {}", tid, x, y);
                     let pixel = render_pixel(scene, x, y);
-                    output_chan.send(Response::Pixel { x, y, pixel });
+                    output_chan
+                        .send(Response::Pixel { x, y, pixel })
+                        .expect("failed to send line response");
                 }
             },
         }
@@ -351,6 +361,7 @@ pub fn render(scene: Scene, output_dir: &Path) -> std::result::Result<(), std::i
     let scene = Arc::new(scene);
     let pixel_req_rx = Arc::new(Mutex::new(pixel_req_rx));
     info!("Creating {} render threads", num_threads);
+    info!("Adaptive subsampling: {}", scene.adaptive_subsampling);
     for i in 0..num_threads {
         let s = sync::Arc::clone(&scene);
         let pixel_req_rx = pixel_req_rx.clone();
@@ -367,12 +378,16 @@ pub fn render(scene: Scene, output_dir: &Path) -> std::result::Result<(), std::i
         let batch_line_requests = true;
         if batch_line_requests {
             for y in 0..h {
-                pixel_req_tx.send(Request::Line { width: w, y });
+                pixel_req_tx
+                    .send(Request::Line { width: w, y })
+                    .expect("failed to send line request");
             }
         } else {
             for y in 0..h {
                 for x in 0..w {
-                    pixel_req_tx.send(Request::Pixel { x, y });
+                    pixel_req_tx
+                        .send(Request::Pixel { x, y })
+                        .expect("failed to send pixel request");
                 }
             }
         }
@@ -424,11 +439,7 @@ pub fn render(scene: Scene, output_dir: &Path) -> std::result::Result<(), std::i
                     ]),
                 );
             }
-            Response::Line {
+            Response::Line { y, pixels } => {
-                width: _,
-                y,
-                pixels,
-            } => {
                 for (x, pixel) in pixels.iter().enumerate() {
                     let y_inv = scene.height - y - 1;
                     img.put_pixel(

rtiow/src/scenes/book.rs

@@ -51,6 +51,7 @@ pub fn new(opt: &Opt) -> Scene {
         camera,
         world,
         subsamples: opt.subsamples,
+        adaptive_subsampling: opt.adaptive_subsampling,
         num_threads: opt.num_threads,
         width: opt.width,
         height: opt.height,

rtiow/watch_all_features.sh

@@ -0,0 +1,5 @@
+export RUSTFLAGS="-D warnings"
+cargo watch -x 'build' \
+  -x 'build --features=prom' \
+  -x 'build --features=profile' \
+  -x 'build --features=prom,profile'